the emf produced by a voltage cell is
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Explanation:
electric current, because electric current is produce due to the potential difference, which is created by voltage difference
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The emf ℰ of the source is defined as the work dW done per charge dq: ℰ = dW/dq. In the case of an electrical generator, a time-varying magnetic field inside the generator creates an electric field via electromagnetic induction, which in turn creates a voltage difference between the generator terminals.
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